2006 INFINITI M35 engine cooling

EXHAUST MANIFOLD AND THREE WAY CATALYST
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Revision: 2006 January2006 M35/M45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
ComponentsNBS004OV
Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS004OW
REMOVAL
WAR NING :
Perform the work when the exhaust and cooling system have completely cooled down.
1. Remove engine room cover (RH and LH). Refer to EM-173, "
ENGINE ROOM COVER" .
2. Remove engine cover with power tool. Refer to EM-179, "
INTAKE MANIFOLD" .
3. Remove air duct (inlet), air cleaner case and air duct and resonator assembly. Refer to EM-177, "
AIR
CLEANER AND AIR DUCT" .
4. Remove front and rear engine undercovers with power tool.
1. Harness bracket 2. Exhaust manifold cover (right bank) 3.Exhaust manifold and three way cat-
alyst (right bank)
4. Air fuel ratio sensor 1 (bank 2) 5. Gasket 6. Harness bracket
7. Air fuel ratio sensor 1 (bank 1) 8.Exhaust manifold and three way cat-
alyst (left bank)9. Exhaust manifold cover (left bank)
PBIC3299E

EM-214
[VK45DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
f. Further tighten by 90 degrees. (Angle tightening)
Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
15. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns
smoothly.
16. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
PBIC2346E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-222
[VK45DE]
CAMSHAFT
Revision: 2006 January2006 M35/M45
4. Crank the engine, and then make sure that engine oil comes out
from intake valve timing control cover oil hole. End crank after
checking.
WA R N I N G :
Be careful not to touch rotating parts (drive belt, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do
not allow engine oil to get on rubber components such as
drive belt or engine mount insulators. Immediately wipe off
any splashed engine oil.
Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from intake valve timing control cover oil hole. Refer to LU-24, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.
Clean oil groove if necessary. Refer to LU-24, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Valve ClearanceNBS004PB
INSPECTION
In cases of removing/installing or replacing camshaft and valve-related parts, or of unusual engine conditions
due to changes in valve clearance (found malfunctions during starting, idling or causing noise), perform
inspection as follows:
1. Remove rocker covers (right and left bank). Refer to EM-199, "
ROCKER COVER" .
PBIC2848E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

ENGINE ASSEMBLY
EM-247
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Revision: 2006 January2006 M35/M45
Separation Work
1. Install engine slingers into front of cylinder head (left bank) and
rear of cylinder head (right bank).
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member.
CAUTION:
Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
5. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
6. Separate engine from transmission assembly. Refer to AT-271, "
TRANSMISSION ASSEMBLY" .
7. Remove engine mounting insulators (RH and LH) and brackets (RH and LH) from engine with power tool.
8. Remove rear engine mounting member and engine mounting insulator (rear) from transmission.
INSTALLATION
Note the following, and install in the reverse order of removal.
Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.
For a location with a positioning pin, insert it securely into hole of mating part.
For a part with a specified installation orientation, refer to component figure in EM-244, "Components" .
When installing engine mounting brackets (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).
NOTE:
Figure shows LH bank.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedure for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.Slinger bolts:
:33.4 Nꞏm (3.4 kg-m, 25 ft-lb)
PBIC2447E
PBIC3305E

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IDX
ALPHABETICAL INDEX
Camshaft(VQ35DE) ........................................... EM-84
CAN .................................................................... DI-77
CAN - Wiring diagram ......... EC-174, EC-887, AT-106,
LAN-50
, LAN-91, LAN-132, LAN-179, LAN-226,
LAN-277
, LAN-323, LAN-369, LAN-419, LAN-469,
LAN-523
, LAN-566, LAN-609, LAN-658, LAN-707
CAN (Controller Area Network) ... SB-5, BL-26, BL-60,
BL-224
, GW-19, GW-75, GW-97, SE-16
CAN communication ........... EC-173, EC-176, EC-748,
EC-886
, EC-889, AT-32, AT-105, TF-13, TF-32, WT-12,
SB-5
, BL-26, BL-60, BL-224, GW-19, GW-75, GW-97,
SE-16
, WW-11
Canister-See EVAP canister ............... EC-42, EC-752
Center bearing assembly (propeller shaft) ........ PR-12
Center bearing disassembly (propeller shaft) .... PR-11
CHARGE - Wiring diagram ................................ SC-25
Charging system ................................................ SC-23
Chassis and body maintenance ........................ MA-29
CHIME - Wiring diagram ..................................... DI-64
CIGAR - Wiring diagram .................................. WW-49
Cigarette lighter ............................................... WW-49
Circuit breaker ................................................... PG-17
Clock ................................................................. DI-108
CLOCK - Wiring diagram .................................. DI-108
Closed loop control .............................. EC-32, EC-742
Closed loop control (Bank 1) ........... EC-509, EC-1236
Closed loop control (Bank 2) ........... EC-509, EC-1236
Collision diagnosis ........................................... SRS-50
Combination lamp, front, removal and installation ........
LT-76
Combination lamp, rear, removal and installation ........
LT-266
Combination meter ............................................... DI-5
COMPAS - Wiring diagram ............................... DI-106
Compass .......................................................... DI-105
Component Location (auto A/C) ...................... ATC-42
Compression pressure(VK45DE) .................... EM-233
Compression pressure(VQ35DE) .................... EM-101
Compressor special service tool ...................... ATC-16
Condenser ..................................................... ATC-165
Connecting rod bearing clearance(VK45DE) .. EM-273
Connecting rod bushing clearance .................. EM-142
Connecting rod bushing clearance(VK45DE) .. EM-268
Connecting rod(VK45DE) ................................ EM-268
Connecting rod(VQ35DE) ................................ EM-140
CONSULT-II Reference value (A/T) .................. AT-90
Control units (terminal arrangement) ............... PG-104
Control valve (A/T) ............................................. AT-38
Controller Area Network (CAN) ... SB-5, BL-26, BL-60,
BL-224
, GW-19, GW-75, GW-97, SE-16
Converter housing installation ............ AT-274, AT-277
COOL/F - Wiring diagram ................ EC-515, EC-1242
Coolant replacement(VQ35DE) ......................... MA-15
Cooling circuit (engine)(VK45DE) ...................... CO-38
Cooling circuit (engine)(VQ35DE) ....................... CO-9
Cooling fan motor ............ EC-524, EC-1249, EC-1250
Cooling fan(VK45DE) ........................................ CO-51
Cooling fan(VQ35DE) ........................................ CO-22
Cowl top ............................................................... EI-18
Cowl top cover .................................................... EI-18
Crankcase ventilation system - See Positive crankcase
ventilation ............................................. EC-51
, EC-761
Crankshaft position sensor (POS) ... EC-376, EC-1099
Crankshaft(VK45DE) ...................................... EM-250
Crankshaft(VQ35DE) ...................................... EM-140
Crash zone sensor .......................................... SRS-45
CUR/SE - Wiring diagram .. EC-539, EC-545, EC-551,
EC-557
, EC-1265, EC-1271, EC-1277, EC-1283
Cylinder block boring(VK45DE) ...................... EM-271
Cylinder block(VK45DE) ................................. EM-249
Cylinder block(VQ35DE) ................................. EM-123
Cylinder head bolt tightening(VK45DE) .......... EM-235
Cylinder head bolt tightening(VQ35DE) .......... EM-104
Cylinder head(VK45DE) ................................. EM-233
Cylinder head(VQ35DE) ................................. EM-101
D
D/LOCK - Wiring diagram .................................. BL-28
Daytime light system ........................................... LT-79
Daytime running light - See Daytime light system LT-79
DEF - Wiring diagram ............................ SB-7, SE-118
Diagnosis sensor unit ..................................... SRS-48
Diagnostic trouble code (DTC) for OBD system EC-16,
EC-58
, EC-726, EC-769
Direct clutch solenoid valve ............... AT-155, AT-157
Display and amp.assembly ............... ATC-53, ATC-66
Door glass ........................................... GW-63, GW-67
Door glass Fitting Adjustment(Front) ................ GW-66
Door glass Fitting Adjustment(Rear) ................. GW-70
Door lock .......................................................... BL-196
Door mirror ...................................................... GW-120
Door trim ............................................................. EI-34
Door, front ........................................... BL-190, GW-63
Door, rear ............................................ BL-190, GW-67
Drive belt inspection ......................................... MA-22
Drive belt inspection(VQ35DE) ......................... MA-14
Drive belt(VK45DE) ........................................ EM-174
Drive belt(VQ35DE) .......................................... EM-15
Drive shaft ......................................................... MA-38
Drive shaft (rear) ............................................... RAX-8
Driver air bag .................................................. SRS-38
DTRL - Wiring diagram ....................................... LT-84
Duct and grilles .............................................. ATC-144
E
ECM power supply EC-166
, EC-492, EC-879, EC-1211
ECM/PW - Wiring diagram ............... EC-493, EC-1212
ECTS - Wiring diagram ...................... EC-228, EC-950
Electric sunroof .................................................. RF-10
Electric throttle control actuator ........ EC-613, EC-624,
EC-1344
, EC-1356
Electric throttle control actuator (VK45DE) ..... EM-179
Electric throttle control actuator (VQ35DE) ....... EM-19
Electrical load signal circuit .............. EC-697, EC-1439
Electrical unit ................................................... PG-104
Electrical units location ...................................... PG-96

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ALPHABETICAL INDEX
EC-310, EC-1009, EC-1020, EC-1033
Heated oxygen sensor 2 heater (bank 1) ....... EC-189,
EC-911
Heated oxygen sensor 2 heater (bank 2) ....... EC-189,
EC-911
Heated seat ..................................................... SE-143
Heater and cooling unit (Heater core) ........... ATC-135
HFC134a (R134a) system precaution ............... ATC-6
HFC134a (R134a) system service procedure ATC-151
HFC134a (R134a) system service tools .......... ATC-17
HFC134a system service equipment precaution ..........
ATC-13
High and low reverse clutch solenoid valve .... AT-159,
AT-161
Hood ................................................................... BL-15
Horn ................................................................. WW-53
HORN - Wiring diagram ................................... WW-53
How to erase DTC for OBD system ..... EC-67, EC-778
HSEAT - Wiring diagram ................................. SE-146
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IATS - Wiring diagram ....................... EC-223
, EC-945
ICC - Wiring diagram ....................................... ACS-21
ICC/BS - Wiring diagram ................. EC-578, EC-1304
ICC/SW - Wiring diagram ................ EC-563, EC-1289
ICCBOF - Wiring diagram ................ EC-700, EC-1442
Idle air volume learning ....................... EC-96, EC-807
Idle mixture ratio .................................. EC-84, EC-795
Idle speed .............................. EC-77, EC-788, EC-793
Idle speed control (ISC) .... EC-483, EC-485, EC-1202,
EC-1204
Ignition coil ....................................... EC-666, EC-1407
Ignition coil(VK45DE) ...................................... EM-190
Ignition coil(VQ35DE) ........................................ EM-42
Ignition control system ..................... EC-666, EC-1407
Ignition timing ........................ EC-77, EC-788, EC-793
IGNSYS - Wiring diagram ................ EC-667, EC-1408
Illumination ....................................................... LT-295
Illumination control ................. LT-291, LT-292, LT-293
In vehicle sensor ........................... ATC-116, ATC-127
INJECT - Wiring diagram ................. EC-680, EC-1421
Injector ............................................................. EC-679
Input clutch solenoid valve ................. AT-147, AT-149
Instrument panel .................................................. IP-10
Intake air temperature sensor ........... EC-221, EC-241,
EC-943
, EC-964
Intake door control linkage adjustment ............ ATC-88
Intake door motor ........................... ATC-86, ATC-133
Intake manifold collector(VQ35DE) ................... EM-19
Intake manifold(VK45DE) ................................ EM-179
Intake manifold(VQ35DE) .................................. EM-24
Intake sensor ................................ ATC-122, ATC-129
Intake valve timing control (Bank 1) .. EC-178, EC-891
Intake valve timing control (Bank 2) .. EC-178, EC-891
Intake valve timing control position sensor (Bank 1) ....
EC-1228
Intake valve timing control position sensor (Bank 2) ....
EC-1228
Intake valve timing control solenoid valve (Bank 1) ......
EC-197
, EC-920
Intake valve timing control solenoid valve (Bank 2) ......
EC-197
, EC-920
Integrated homelink transmitter ....................... BL-281
Intelligent cruise control (ICC) system .............. ACS-6
Interior ................................................................. EI-37
Interior lamp ...................................................... LT-267
IPDM (Intelligent power distribution module engine
room) ................................................................. PG-18
IVCB1 - Wiring diagram ..................... EC-198, EC-921
IVCB2 - Wiring diagram ..................... EC-200, EC-923
IVCSB1 - Wiring diagram ............................... EC-1229
IVCSB2 - Wiring diagram ............................... EC-1231
IVIS (Infiniti vehicle immobilizer system) precautions ...
GI-3
IVTB1 - Wiring diagram ................................... EC-894
IVTB2 - Wiring diagram ................................... EC-896
K
Knock sensor (KS) ........................... EC-371
, EC-1094
KS - Wiring diagram ......................... EC-372, EC-1095
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LAN system circuit ........................................... ATC-70
Lane Departure Warning System ....................... DI-78
Laser beam aiming adjustment ....................... ACS-13
Latch (lower anchors and tether for children) system ...
SB-36
LDW .................................................................... DI-78
LDW - Wiring Diagram ........................................ DI-89
License lamp ..................................................... LT-249
Line pressure solenoid valve ........................... AT-130
Line pressure test (A/T) ..................................... AT-55
Liquid gasket application ......................... EM-7, LU-22
Liquid gasket application(VQ35DE) ........... LU-3, CO-3
Location of electrical units ................................. PG-96
Low coast brake solenoid valve ......... AT-163, AT-165
Low tire pressure warning system ...................... WT-9
Lubricant (R134a) A/C ..................................... ATC-26
Lubrication circuit (engine)(VK45DE) ................ LU-24
Lubrication circuit (engine)(VQ35DE) .................. LU-5
Lubrication oil A/C .......................................... ATC-174
M
MAFS - Wiring diagram ..... EC-208
, EC-216, EC-930,
EC-938
Magnet clutch .................................................. ATC-94
MAIN - Wiring diagram ........ EC-166, EC-879, AT-180
Maintenance (engine)(VQ35DE) ...................... MA-14
Major overhaul (Final drive) .............. FFD-15, RFD-18
Major overhaul (Transfer) .................................. TF-45
Malfunction indicator lamp (MIL) .......... EC-69, EC-780
Manual mode switch ........................................ AT-167
Mass air flow sensor (MAFS) ............ EC-205, EC-214,
EC-927
, EC-936

LAN-40
[CAN]
CAN COMMUNICATION
Revision: 2006 January2006 M35/M45
INPUT/OUTPUT SIGNAL CHART
2WD models
T: Transmit R: Receive
Signals
ECM
TCM
AFS control unit*1
BCM
LDW camera unit*2
Low tire pressure warning control unit
Steering angle sensor
Intelligent Key unit
Unified meter and A/C amp.
AV (NAVI) control unit
RAS control unit*3
Pre-crash seat belt control unit*4
Driver seat control unit
ABS actuator and electric unit (control unit)
ICC sensor integrated unit*5
IPDM E/R
A/C compressor request signal TR
Accelerator pedal position signal T R R R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal TR
Engine coolant temperature signal T R
Engine speed signal T R R R R R R
Engine status signal T R R R
Fuel consumption monitor signal T R R
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
Wide open throttle position signal T R
A/T CHECK indicator lamp signal T R
A/T position indicator signal T R R R R
A/T self-diagnosis signal R T
Current gear position signal T R R
Manual mode indicator signal T R R
N range signal T R R
Output shaft revolution signal R T R R
P range signal T R R R R
R range signal T R R R
Turbine revolution signal R T R
AFS OFF indicator signal T R
A/C switch signal R T
ACC signal T R R

LAN-44
[CAN]
CAN COMMUNICATION
Revision: 2006 January2006 M35/M45
AW D m o del s
T: Transmit R: Receive
Signals
ECM
TCM
AWD control unit
AFS control unit*1
BCM
LDW camera unit*2
Low tire pressure warning control unit
Steering angle sensor
Intelligent Key unit
Unified meter and A/C amp.
AV (NAVI) control unit
Pre-crash seat belt control unit*3
Driver seat control unit
ABS actuator and electric unit (control unit)
ICC sensor integrated unit*4
IPDM E/R
A/C compressor request signal TR
Accelerator pedal position signal T R R R R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal TR
Engine coolant temperature signal T R
Engine speed signal T R R R R R R
Engine status signal T R R R
Fuel consumption monitor signal T R R
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
Wide open throttle position signal T R
A/T CHECK indicator lamp signal T R
A/T position indicator signal T R R R R
A/T self-diagnosis signal R T
Current gear position signal T R R
Manual mode indicator signal T R R
N range signal T R R
Output shaft revolution signal R T R R
P range signal T R R R R
R range signal T R R R
Turbine revolution signal R T R
AWD signal T R
AWD warning lamp signal T R
AFS OFF indicator signal T R
A/C switch signal R T